Flashing question mark appears on the screen

Note: This system will only boot with the version of Mac OS X system that shipped with this computer or later. It does not support booting into Mac OS 9.

  1. Start up from the MacBook Pro Mac OS X Install Disc 1 DVD that came with the computer (hold down the "C" key during restart).
  2. When the Installer opens, select Disk Utility from the Installer menu under Utilities.
  3. When Disk Utility opens, all mounted disk and volumes will be listed on the left hand side. If you don't see the internal hard drive, the system is not recognizing it. Skip to the next step. Otherwise, select the internal hard drive icon and follow the instructions under the First Aid tab to verify the hard disk, and repair if needed. Restart the computer.
  4. If Disk Utility is unable to repair a persistent directory issue or corrupt file information, consult the following articles for possible solutions:

106214: Using Disk Utility and fsck to resolve startup issues or perform disk maintenance 25505: Directory Issue Verification or Repair Is Not Part of Installation 25770: Handling "overlapped extent allocation" errors reported by Disk Utility or fsck 302411: Disk Utility reports "Underlying task reported failure" when repairing a volume

  1. If the hard drive is still not recognized, refer to the Internal Hard Drive Not Recognized troubleshooting section.
  2. Reinstall system software using the MacBook Pro Mac OS X Install 1 disc. Note: Don't forget to install both the Mac OS X system and application software.

For further assistance in software troubleshooting, go to Knowledge Base article:

58042: A flashing question mark appears when you start your Mac

88410: SMART: A Brief Description

152349: Mac OS X 10.3: Replacing a disk before it fails

Power, but No Video (Computer begins to power up, the fans and hard drive spin, the Caps Lock key lights up when pressed, but there is no startup chime or video.)

Note: Examine the display carefully. An image may be barely present on the screen, but with no backlight clearly illuminating the image. In this case, the system is working properly except for the backlight. Use the Display: Dim Video troubleshooting section to resolve this issue.

  1. Reset the power manager. See procedure under Resetting the Power Manager (SMC) in the Hardware Troubleshooting Tools and Tips section.
  2. Try connecting an external display to check for intact video signal. If external video appears, check the system for any pending software or firmware updates and update accordingly.
  3. Verify that the LVDS cable connection is properly seated to its connector on the logic board and that the cables are not damaged.
  4. Remove the display housing and check that the flex connection is properly inserted, aligned and seated in its connector on the panel. Misalignment can cause multiple video issues. During insertion, the connector should be perfectly straight, not at an angle, and the connector should slide into its mate in a flat position, parallel to the LCD panel, not obliquely. See illustration below.

■ ■11 pi■■■■■■■■■■■■■■■■p■■■■

Correct Insertion Incorrect Insertion

Correct Insertion Incorrect Insertion

  1. Replace the display assembly.
  2. Check all cable and flex connections to the logic board. Try restarting.
  3. Replace the logic board.
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